HIFI instrument and calibration web page

• The HIFI products now come with a frequency-dependent intensity calibration uncertainty budget
• Channel flags for spurs are now populated in all HIFI observations (this was limited to spectral scan up to HIPE 13)
• Re-organisation of the HIFI quality flags for a better assessement of issues being relevant or not to the end products

Reducing HIFI data

Recommended User release

• Intensity calibration uncertainty
  
  • HIPE 14 introduces a new product providing an estimated breakdown of the intensity calibration uncertainty. The uncertainties are given separately for each component, as well as in a quadratic sum fashion for all statistically independent elements. This sum applies to the calibration of data in the Ta* scale. Further systematic and random error apply for data converted into different intensity scales (e.g. Tmb or Jy). See further details in section 9 of the DRG.

• A&A Herschel First Science Result issue (Vol. 518) and A&A Herschel/HIFI Special issue (Vol. 521)
• Further details about the optical modeling and characterisation of HIFI can be found in the PhD thesis of Willem Jellema (59 Mb)
• Further details about some of the standing waves at play in HIFI and the matching technique can be found in the PhD thesis of Ronan Higgins (18.5 Mb)